On the compactness and the essential norm of operators defined by infinite tridiagonal matrices
Concrete Operators, 2023 In this article, all sequences u{\boldsymbol{u}}, v{\boldsymbol{v}}, and w{\boldsymbol{w}} that define continuous and compact tridiagonal operators Tu,v,w{T}_{u,v,w} acting on the weighted sequence space lβ2{l}_{\beta }^{2} were characterized ...
Caicedo Alexander +2 more
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Essential norm of generalized Hilbert matrix from Bloch type spaces to BMOA and Bloch space
AIMS Mathematics, 2021 Let $ \mu $ be a positive Borel measure on the interval $ [0, 1) $. The Hankel matrix $ {\mathcal H}_\mu = (\mu_{n+k})_{n, k\geq 0} $ with entries $ \mu_{n, k} = \mu_{n+k} $ induces the operatoron the space of all analytic functions $ f(z) = \sum^\infty_{
Songxiao Li , Jizhen Zhou
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A class of operator related weighted composition operators between Zygmund space [PDF]
AUT Journal of Mathematics and Computing, 2021 Let $\mathbb {D}$ be the open unit disk in the complex plane $\mathbb{C}$ and $H(\mathbb{D})$ be the set of all analytic functions on $\mathbb{D}$. Let $u, v\in H(\mathbb{D})$ and $\varphi$ be an analytic self-map of $\mathbb{D}$.
Ebrahim Abbasi
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Norms and essential norms of linear combinations of endomorphisms [PDF]
Transactions of the American Mathematical Society, 2004 We compute norms and essential norms of linear combinations of endomorphisms on uniform algebras.
Gorkin, Pamela, Mortini, Raymond
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The essential spectrum, norm, and spectral radius of abstract multiplication operators
Concrete Operators, 2023 Let EE be a complex Banach lattice and TT is an operator in the center Z(E)={T:∣T∣≤λIfor someλ}Z\left(E)=\left\{T:| T| \le \lambda I\hspace{0.33em}\hspace{0.1em}\text{for some}\hspace{0.1em}\hspace{0.33em}\lambda \right\} of EE. Then, the essential norm ‖
Schep Anton R.
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Essential pseudospectra and essential norms of band-dominated operators [PDF]
Journal of Mathematical Analysis and Applications, 2016 39 pages; minor changes and ...
Hagger, Raffael +2 more
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Generalized Stević-Sharma operators from the minimal Möbius invariant space into Bloch-type spaces
Demonstratio Mathematica, 2023 The aim of this study is to investigate the boundedness, essential norm, and compactness of generalized Stević-Sharma operator from the minimal Möbius invariant space into Bloch-type space.
Guo Zhitao
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Against Essential Mental Normativity Again [PDF]
Dialogue, 2011 ABSTRACT: In a recent paper (2008), I presented two arguments against the thesis that intentional states are essentially normative. In this paper, I defend those arguments from two recent responses, one from Nick Zangwill in his (2010) and one from Daniel Laurier in the present volume, and offer improvements of my arguments in light of Laurier’s ...
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Essential Norm of the Weighted Composition Operators Between Growth Space [PDF]
Sahand Communications in Mathematical AnalysisFor $\alpha>0$, the growth space $\mathcal{A}^{-\alpha}$ is the space of all function $f\in H(\DD)$ such that $$\left\|f\right\|_{\mathcal{A}^{-\alpha}}=\sup_{z\in\DD}\left(1-\left|z\right|^2\right)^\alpha \left|f(z)\right|
Ebrahim Abbasi, Mostafa Hassanlou
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Essential normality, essential norms and hyperrigidity
Journal of Functional Analysis, 2015 28 ...
Matthew Kennedy, Orr Moshe Shalit
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